chhorn

Espacially this: https://phpdelusions.net/pdo#fetch as it looks like you have mostly anything else. Also have a look at print_r(), var_dump(), htmlspecialchars(), Template Engines and XSS (cross site scripting).

I don't see anything that is related to image manipulation in your code. You may want to read this: https://www.daveperrett.com/articles/2012/07/28/exif-orientation-handling-is-a-ghetto/